package com.util.comm;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class SessionFilter implements Filter {

	public void destroy() {
		// TODO Auto-generated method stub
		
	}

	public void doFilter(ServletRequest req, ServletResponse res,
			FilterChain chain) throws IOException, ServletException {
		    HttpServletRequest request=(HttpServletRequest)req;
		    HttpServletResponse response=(HttpServletResponse)res;
		    HttpSession   session=request.getSession();
		    if(session.getAttribute(Contants.SESSION_USER)==null){
		    	    response.sendRedirect(request.getContextPath()+"/login.jsp");
	                return;
		    }
		    chain.doFilter(req, response);
	}

	public void init(FilterConfig arg0) throws ServletException {
		// TODO Auto-generated method stub
		
	}

}
